The sustainable yield of natural capital is the ecological yield that can be extracted without reducing the base of capital itself, i.e. the surplus required to maintain ecosystem services at the same or increasing level over time. This yield usually varies over time with the needs of the ecosystem to maintain itself, e.g. a forest that has recently suffered a blight or flooding or fire will require more of its own ecological yield to sustain and re-establish a mature forest. While doing so, the sustainable yield may be much less.

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  • The sustainable yield of natural capital is the ecological yield that can be extracted without reducing the base of capital itself, i.e. the surplus required to maintain ecosystem services at the same or increasing level over time. This yield usually varies over time with the needs of the ecosystem to maintain itself, e.g. a forest that has recently suffered a blight or flooding or fire will require more of its own ecological yield to sustain and re-establish a mature forest. While doing so, the sustainable yield may be much less. In forestry terms it is the largest amount of harvest activity that can occur without degrading the productivity of the stock. This concept is important in fishery management, in which sustainable yield is defined as the number of fish that can be extracted without reducing the base of fish stock, and the maximum sustainable yield is defined as the amount of fish that can be extracted under given environmental conditions. In fisheries, the basic natural capital or virgin population, must decrease with extraction. At the same time productivity increases. Hence, sustainable yield would be within the range in which the natural capital together with its production are able to provide satisfactory yield. It may be very difficult to quantify sustainable yield, because every dynamic ecological conditions and other factors not related to harvesting induce changes and fluctuations in both, the natural capital and its productivity. In the case of groundwater there is a safe yield of water extraction per unit time, beyond which the aquifer risks the state of overdrafting or even depletion. (en)
  • 自然资本的可维持产量是指在不缩减自然资本的情况下人们可以利用的产出.典型的可维持产量有渔业中的最大捕获量,指在不减少种群维持能力下最大的捕获量.其它的例子还有森林. 还有地下水资源的过渡开采会造成地下水资源的枯竭. (zh)
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http://purl.org/linguistics/gold/hypernym
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  • 自然资本的可维持产量是指在不缩减自然资本的情况下人们可以利用的产出.典型的可维持产量有渔业中的最大捕获量,指在不减少种群维持能力下最大的捕获量.其它的例子还有森林. 还有地下水资源的过渡开采会造成地下水资源的枯竭. (zh)
  • The sustainable yield of natural capital is the ecological yield that can be extracted without reducing the base of capital itself, i.e. the surplus required to maintain ecosystem services at the same or increasing level over time. This yield usually varies over time with the needs of the ecosystem to maintain itself, e.g. a forest that has recently suffered a blight or flooding or fire will require more of its own ecological yield to sustain and re-establish a mature forest. While doing so, the sustainable yield may be much less. (en)
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  • Sustainable yield (en)
  • 可维持产量 (zh)
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